CN115627823A - Municipal road drainage pipeline embedding construction method - Google Patents
Municipal road drainage pipeline embedding construction method Download PDFInfo
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- CN115627823A CN115627823A CN202211251931.XA CN202211251931A CN115627823A CN 115627823 A CN115627823 A CN 115627823A CN 202211251931 A CN202211251931 A CN 202211251931A CN 115627823 A CN115627823 A CN 115627823A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The application discloses a municipal road drainage pipeline burying construction method, which comprises the following steps: s1, excavating a pipe trench; s2, installing an auxiliary splicing frame at the bottom of the pipe trench, wherein the auxiliary splicing frame is positioned at the splicing position of two adjacent drainage pipe sections and is used for splicing the drainage pipe sections; s3, splicing the drainage pipe joints by using the auxiliary splicing frame; s4, sealing and reinforcing the spliced position of the drainage pipe joint; s5, building a pressure bearing frame between the two adjacent auxiliary splicing frames, wherein the pressure bearing frame is used for supporting a soil layer above the drainage pipeline; s6, repeating the steps S2-S5 until the splicing of the drainage pipe joints and the building of the pressure bearing frame are completed; and S7, backfilling the soil layer and compacting. The application has the effect of reducing the possibility of cracking of the drainage pipeline due to overlarge pressure.
Description
Technical Field
The application relates to the technical field of drainage pipeline construction, in particular to a municipal road drainage pipeline embedding construction method.
Background
In municipal engineering construction, drainage pipelines need to be arranged underground. The existing drainage pipeline is generally formed by splicing a plurality of sections of concrete drainage pipe sections or a plurality of sections of HDPE double-wall corrugated pipe sections. When the drainage pipeline needs to pass through a municipal road area, because the municipal road vehicle flow channel is large, soil layer disturbance is easily caused, the drainage pipeline is easy to crack after being subjected to external shearing force, and particularly, the two ends of the drainage pipeline are easy to leak and even burst, so that the follow-up maintenance cost is high, and great potential safety hazards exist.
Disclosure of Invention
In order to reduce the possibility of cracking of the drainage pipeline, the application provides a municipal road drainage pipeline embedding construction method.
The application provides a municipal road drainage pipeline embedding construction method which adopts the following technical scheme:
a municipal road drainage pipeline burying construction method comprises the following steps:
s1, excavating a pipe trench;
s2, installing an auxiliary splicing frame at the bottom of the pipe trench, wherein the auxiliary splicing frame is positioned at the splicing position of two adjacent drainage pipe sections and is used for splicing the drainage pipe sections;
s3, splicing the drainage pipe joints by using the auxiliary splicing frame;
s4, sealing and reinforcing the spliced position of the drain pipe joint;
s5, building a pressure bearing frame between the two adjacent auxiliary splicing frames, wherein the pressure bearing frame is used for supporting a soil layer above the drainage pipeline;
s6, repeating the steps S2-S5 until the splicing of the drain pipe joints and the building of the pressure bearing frame are completed;
and S7, backfilling the soil layer and compacting.
Through adopting above-mentioned technical scheme, this application plays the centering effect to the drainage tube coupling through set up supplementary concatenation frame in the trench on the one hand to conveniently splice the drainage tube coupling, simultaneously, can also do sealed reinforcement to the concatenation department of drainage tube coupling through supplementary concatenation frame and handle, thereby improved the compressive capacity of drainage tube coupling junction. And after the sealing and reinforcing treatment is finished at the splicing part of the drainage pipe joint, a bearing frame is built between two adjacent auxiliary splicing frames, so that after a subsequent backfilling soil layer, the gravity of most soil layers and the pressure generated by soil layer disturbance act on the bearing frame, the possibility of cracking of the drainage joint is reduced, the subsequent maintenance cost is reduced, and the potential safety hazard is reduced.
Preferably, the auxiliary splicing frame comprises an annular frame, an annular groove is recessed in the inner annular surface of the annular frame, a grouting hole and an exhaust hole are formed in the outer annular surface of the annular frame, and the grouting hole and the exhaust hole are communicated with the annular groove; and S4, after the two drainage pipe joints are spliced through the annular frame, pouring concrete into the annular groove through the grouting holes.
Through adopting above-mentioned technical scheme, form between annular frame and the drain pipe festival and pour the chamber, consequently pour the intracavity through the slip casting hole toward pouring the intracavity concrete, strengthened the joint strength of two adjacent sections drain pipe festival promptly, also strengthened the compressive capacity and the leakproofness of drain pipe festival concatenation department.
Preferably, the annular frame comprises an arc-shaped bottom frame, the arc-shaped bottom frame is arranged in a semicircular ring shape, two ends of the arc-shaped bottom frame are hinged with arc-shaped supports, the two arc-shaped supports are locked and connected through fasteners, the grouting hole is formed in any one of the arc-shaped supports, and the exhaust hole is formed in the other arc-shaped support; and S5, after the concrete is poured through the grouting holes and the demolding strength of the concrete is reached, unfastening the fastening piece, rotating the arc-shaped support until one end, far away from the arc-shaped bottom frame, of the arc-shaped support faces the side wall of the pipe ditch, fixing the arc-shaped support on a soil layer on the side part of the pipe ditch by utilizing the anchor rod, and then installing the pressure-bearing frame between the arc-shaped supports on the two adjacent annular frames.
Through adopting above-mentioned technical scheme, on the one hand makes things convenient for the drawing of patterns, and on the other hand makes arc support and drain pipe festival separation, and the bearing frame sets up between the arc support that is located on two adjacent ring frames for bearing frame and drain pipe festival contactless, bearing frame and ring frame and stock constitute supporting member, thereby can bear most soil layer pressure, and then make the drain pipe festival not easily split.
Preferably, a flexible sealing belt is arranged at the bottom of the annular groove.
By adopting the technical scheme, on one hand, concrete slurry cannot overflow from the gap of the annular frame in the grouting process; on the other hand, the hinge shaft between the arc-shaped support and the arc-shaped bottom frame is not solidified under the action of concrete, so that the arc-shaped support is convenient to rotate subsequently.
Preferably, one end of the arc-shaped support, which is far away from the arc-shaped underframe, is fixedly connected with a connecting plate, and the side part of the connecting plate is fixedly connected with a fixing ring; and S5, after the arc-shaped support rotates in place, penetrating the anchor rod through the fixing ring and then driving the anchor rod into a soil layer on the side part of the pipe trench.
Through adopting above-mentioned technical scheme, conveniently utilize the stock to fix the annular frame in trench lateral part soil layer.
Preferably, the pressure-bearing frame includes first pressure-bearing plate and second pressure-bearing plate, first pressure-bearing plate, second pressure-bearing plate all rotate with the connecting plate and are connected, first pressure-bearing plate and second pressure-bearing plate set up relatively, be provided with first butt portion on the first pressure-bearing plate, the second pressure-bearing plate is provided with the second butt portion, the movement track of first pressure-bearing plate intersects with the second butt portion, the movement track of second pressure-bearing plate intersects with first butt portion.
Through adopting above-mentioned technical scheme, all install back between two adjacent connecting plates that lie in same one side of trench when first bearing plate, second bearing plate, rotate first bearing plate and second bearing plate until first bearing plate and second butt portion butt, second bearing plate and first butt portion butt, later backfill soil layer. Because the first bearing plate is abutted by the second abutting part and the second bearing plate is abutted by the first abutting part, the first bearing plate and the second bearing plate cannot continuously rotate towards opposite directions, and the soil layer is supported by the first bearing plate and the second bearing plate, so that the pressure borne by the drainage pipe joint is remarkably reduced, and the drainage pipe joint is not easy to crack due to compression.
Preferably, a plurality of first through grooves are formed in the first bearing plate, and a plurality of second through grooves are formed in the second bearing plate.
Through adopting above-mentioned technical scheme, when can backfill the soil layer in toward the trench, partial earth can fill up in getting into the space between first bearing plate, second bearing plate and the tube coupling through first logical groove and second logical groove, and then plays the effect of supporting first bearing plate and second bearing plate for first bearing plate and second bearing plate non-deformable.
Preferably, in step S2, before the auxiliary mounting frame is mounted, a mounting groove is excavated at the bottom of the pipe trench corresponding to the joint of the pipe joints, and then the auxiliary mounting frame is placed in the mounting groove.
Through adopting above-mentioned technical scheme, the mounting groove plays limiting displacement to supplementary mounting bracket for supplementary mounting bracket is difficult for empting after installing in the trench, thereby is convenient for splice the drain pipe festival.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the auxiliary splicing frame, the drainage pipe joint can be conveniently spliced by virtue of the auxiliary splicing frame, sealing and reinforcing treatment can be performed at the splicing position of the drainage pipe joint, and the auxiliary splicing frame can also be used as a supporting base of the pressure bearing frame, so that a soil layer above the drainage pipe joint is supported, the pressure applied to the drainage pipe joint is remarkably reduced, and the drainage pipe joint is not prone to cracking due to overlarge pressure;
2. through with first bearing plate, second bearing plate and the articulated setting of arc support to set up first butt portion on first bearing plate, set up second butt portion on the second bearing plate, make first bearing plate and second bearing plate possess self-locking function, be favorable to improving the efficiency of construction.
Drawings
FIG. 1 is a schematic illustration of the assembly of a drain joint using an auxiliary splice frame according to the present application;
FIG. 2 is a schematic structural view of an auxiliary splice rack of the present application;
FIG. 3 is a schematic structural diagram of the construction of the pressure bearing frame on the auxiliary splicing frame in the application;
fig. 4 is an enlarged schematic view of a in fig. 3 of the present application.
Description of the reference numerals:
1. a pipe trench; 2. a drain pipe joint; 3. an annular frame; 31. an arc-shaped chassis; 32. an arc-shaped bracket; 33. grouting holes; 34. an exhaust hole; 35. a connecting plate; 36. a fixing ring; 4. an annular groove; 5. a flexible sealing strip; 6. an anchor rod; 7. a first bearing plate; 71. a first connection portion; 72. a first bending portion; 73. a first fixing strip; 74. a first connecting ring; 8. a second bearing plate; 81. a second connecting portion; 82. a second bending portion; 83. a second fixing strip; 84. a second connection ring; 9. a first through groove; 10. a second through groove; 11. and connecting the screw rod.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a municipal road drainage pipeline burying construction method. The method comprises the following steps:
s1, excavating a pipe trench 1: and (4) measuring and setting out on the ground according to the arrangement line of the drainage pipelines, and then excavating the pipe trench 1.
S2, referring to FIG. 1, installing an auxiliary splicing frame: and (3) excavating a mounting groove (not shown) at the joint of the drain pipe joint 2 corresponding to the bottom of the pipe ditch 1, and then arranging the auxiliary splicing frame in the mounting groove. The auxiliary splicing frame is used for splicing the auxiliary drain pipe joints 2. Specifically, the method comprises the following steps:
referring to fig. 2, the auxiliary splicing frame includes an annular frame 3, an annular groove 4 is recessed in an inner annular surface of the annular frame 3, a section of the annular groove 4 is in a U-shaped configuration, a flexible sealing tape 5 matched with the section of the annular groove 4 in shape is embedded in the annular groove 4, and the flexible sealing tape 5 is made of rubber in the embodiment of the present application.
Annular frame 3 includes arc chassis 31, and arc chassis 31 is the cyclic annular setting of semicircle, and arc chassis 31's both ends all articulate there is arc support 32, and arc support 32 is the setting of quarter ring form. The outer wall of one end of the arc-shaped support 32, which is far away from the arc-shaped bottom frame 31, is provided with a grouting hole 33, and the grouting hole 33 penetrates through the flexible sealing belt 5 and is communicated with the annular groove 4; the outer wall of one end of the other arc-shaped bracket 32, which is far away from the arc-shaped bottom frame 31, is provided with an exhaust hole 34, and the exhaust hole 34 penetrates through the flexible sealing belt 5 and is communicated with the annular groove 4. Connecting plates 35 are welded at one ends, far away from the arc-shaped bottom frame 31, of the two arc-shaped supports 32, the connecting plates 35 extend towards the direction away from the axis of the annular frame 3, and the width of the connecting plates 35 is consistent with that of the arc-shaped supports 32. Fixing rings 36 are welded to both sides of the connecting plate 35 in the width direction. The two connecting plates 35 are connected by a fastener, and the fastener is a common bolt and nut, which will not be described herein.
And S3, splicing the drain pipe joints 2 by using the auxiliary splicing frame. Specifically, the method comprises the following steps: referring to fig. 1 and 2, when the drain is placed in the pipe trench 1, attention is paid to adjusting the position of the drain pipe joint 2, so that the end part of the drain pipe joint 2 is positioned on the arc-shaped bottom frame 31, and the arc-shaped bottom frame 31 plays a centering role in the drain pipe joint 2, thereby facilitating splicing of the drain pipe joint 2. After the splicing of the drain pipe joint 2 is completed, the arc-shaped support 32 is rotated until the two connecting plates 35 are mutually abutted, and then the two connecting plates 35 are locked by using the fasteners.
And S4, sealing and reinforcing the spliced part of the drainage pipe joint 2 by using the auxiliary splicing frame. Specifically, the method comprises the following steps: and (3) pouring concrete into a pouring cavity formed by the annular frame 3 and the drainage pipe joint 2 through the grouting hole 33 by using a grouting machine, observing the pouring condition through the exhaust hole 34, and stopping grouting when the concrete overflows from the exhaust hole 34.
S5, building a pressure bearing frame between the two adjacent auxiliary splicing frames, wherein the pressure bearing frame is used for supporting a soil layer above the drainage pipeline. Specifically, the method comprises the following steps:
referring to fig. 3, after the concrete is solidified and the demolding strength is reached, the fastening member between the connection plates 35 is removed, then the arc bracket 32 is rotated so that the connection plate 35 faces the lateral soil layer of the trench 1, then the anchor 6 is passed through the fixing ring 36, and then the anchor 6 is driven into the lateral soil layer of the trench 1.
The pressure bearing frame comprises a first pressure bearing plate 7 and a second pressure bearing plate 8, the first pressure bearing plate 7 and the second pressure bearing plate 8 are both arranged in an obtuse angle bending mode, the bending angle is 120-135 degrees, and 135 degrees is preferred in the embodiment of the application.
Referring to fig. 3, the first bearing plate 7 includes a first connecting portion 71 and a first bending portion 72, two first connecting rings 74 are fixedly connected to one side of the first connecting portion 71 away from the first bending portion 72, the two first connecting rings 74 are respectively located at two ends of the first connecting portion 71, the first connecting rings 74 are rotatably connected to the connecting screw 11, and a threaded hole matched with the connecting screw 11 is formed in a side portion of the connecting plate 35. The first connecting portion 71 and the first bending portion 72 are both provided with a plurality of first through grooves 9 along the length direction thereof. The first bent portion 72 is fixedly connected to the inner side of one end of the first connecting portion 71, the first abutting portion is a first fixing strip 73, and the first fixing strip 73 extends along the length direction of the first bent portion 72.
Referring to fig. 3 and 4, the second bearing plate 8 includes a second connecting portion 81 and a second bending portion 82, two second connecting rings 84 are fixedly connected to a side of the second connecting portion 81 away from the second bending portion 82, the two second connecting rings 84 are respectively located at two sides of the second connecting portion 81 in the length direction, and the connection manner of the second connecting rings 84 and the connection plate 35 is the same as that of the first connecting ring 74 and the connection plate 35, which is not described herein again. The second connecting portion 81 and the second bending portion 82 are both provided with a plurality of second through grooves 10 along the length direction thereof, and the shapes and the opening sizes of the second through grooves 10 and the first through grooves 9 are the same. A second abutting portion is fixedly connected to an outer side of one end of the second bent portion 82 close to the second connecting portion 81. The second abutting portion is a second fixing strip 83, and the second fixing strip 83 extends along the length direction of the second bending portion 82.
The movement locus of the first bent portion 72 intersects the movement locus of the second fixing bar 83, and the movement locus of the second bent portion 82 intersects the movement locus of the first fixing bar 73. When the first bending portion 72 rotates to abut against the second fixing strip 83 and the second bending portion 82 rotates to abut against the first fixing strip 73, the first through groove 9 on the first bending portion 72 communicates with the second through groove 10 on the second bending portion.
When assembling the pressure bearing frame, the first pressure bearing plate 7 and the second pressure bearing plate 8 are respectively installed between two adjacent connecting plates 35 located on the same side of the pipe chase 1 by using the connecting bolts, so that the first pressure bearing plate 7 and the second pressure bearing plate 8 can rotate relative to the connecting plates 35. Then, the first bearing plate 7 and the second bearing plate 8 are rotated until the first bent portion 72 abuts against the second fixing strip 83 and the second bent portion 82 abuts against the first fixing strip 73.
S5, repeating the steps S2-S5 until the splicing of the drain pipe joint 2 and the building of the pressure bearing frame are completed;
and S7, backfilling the soil layer and compacting.
The implementation principle of the municipal road drainage pipeline burying construction method in the embodiment of the application is as follows: this application is through setting up supplementary splice frame, not only conveniently splice the drain pipe festival 2 with the help of supplementary splice frame, can also do sealed reinforcement processing in the concatenation department of drain pipe festival 2, and supplementary splice frame can also regard as the support basis of bearing frame, thereby play the supporting role to 2 top soil layers of drain pipe festival, show the pressure that reduces drain pipe festival 2 and receive, make drain pipe festival 2 be difficult for because of the too big fracture of pressure, and then reduce follow-up cost of maintenance and reduce the potential safety hazard.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A municipal road drainage pipeline burying construction method is characterized by comprising the following steps: the method comprises the following steps:
s1, excavating a pipe trench (1);
s2, installing an auxiliary splicing frame at the bottom of the pipe ditch (1), wherein the auxiliary splicing frame is positioned at the splicing position of two adjacent drainage pipe joints (2);
s3, splicing the drainage pipe joints (2) by using the auxiliary splicing frame;
s4, sealing and reinforcing the spliced position of the drainage pipe joint (2) by using the auxiliary splicing frame;
s5, building a pressure bearing frame between the two adjacent auxiliary splicing frames, wherein the pressure bearing frame is used for supporting a soil layer above the drainage pipeline;
s6, repeating the steps S2-S5 until the splicing of the drain pipe joint (2) and the building of the pressure bearing frame are completed;
and S7, backfilling the soil layer and compacting.
2. The burying construction method of the municipal road drainage pipeline according to claim 1, characterized in that: the auxiliary splicing frame comprises an annular frame (3), an annular groove (4) is formed in the inner annular surface of the annular frame (3) in a concave mode, a grouting hole (33) and an exhaust hole (34) are formed in the outer annular surface of the annular frame (3), and the grouting hole (33) and the exhaust hole (34) are communicated with the annular groove (4); and in the step S4, after the two drainage pipe joints (2) are spliced through the annular frame (3), concrete is poured into the annular groove (4) through the grouting holes (33).
3. The burying construction method of the municipal road drainage pipeline according to claim 2, characterized in that: the annular frame (3) comprises arc-shaped bottom frames (31), the arc-shaped bottom frames (31) are arranged in a semicircular ring mode, arc-shaped supports (32) are hinged to two ends of each arc-shaped bottom frame (31), the two arc-shaped supports (32) are connected in a locking mode through fasteners, the grouting hole (33) is formed in any one arc-shaped support (32), and the exhaust hole (34) is formed in the other arc-shaped support (32); in the S5 step, after the concrete is poured through the grouting holes (33) and the concrete reaches the demolding strength, the fasteners are unfastened, then the arc-shaped supports (32) are rotated until one ends, far away from the arc-shaped bottom frames (31), of the arc-shaped supports (32) face the side walls of the pipe ditches (1), then the arc-shaped supports (32) are fixed on the soil layers on the side portions of the pipe ditches (1) through anchor rods (6), and then the pressure-bearing frames are installed between the arc-shaped supports (32) on the two adjacent annular frames (3).
4. The burying construction method of the municipal road drainage pipeline according to claim 3, characterized in that: and a flexible sealing belt (5) is arranged at the bottom of the annular groove (4).
5. The method for burying and constructing municipal road drainage pipelines according to claim 3, wherein: one end, far away from the arc-shaped underframe (31), of the arc-shaped support (32) is fixedly connected with a connecting plate (35), and the side part of the connecting plate (35) is fixedly connected with a fixing ring (36); in the S5 step, after the arc-shaped support (32) rotates to the right position, the anchor rod (6) penetrates through the fixing ring (36) and then the anchor rod (6) is driven into the soil layer on the side portion of the pipe trench (1).
6. The burying construction method of the municipal road drainage pipeline according to claim 5, wherein: the pressure-bearing frame comprises a first pressure-bearing plate (7) and a second pressure-bearing plate (8), wherein the first pressure-bearing plate (7) and the second pressure-bearing plate (8) are connected with a connecting plate (35) in a rotating mode, the first pressure-bearing plate (7) and the second pressure-bearing plate (8) are arranged oppositely, a first abutting portion is arranged on the first pressure-bearing plate (7), a second abutting portion is arranged on the second pressure-bearing plate (8), the movement track of the first pressure-bearing plate (7) is intersected with the second abutting portion, and the movement track of the second pressure-bearing plate (8) is intersected with the first abutting portion.
7. The burying construction method of the municipal road drainage pipeline according to claim 6, wherein: a plurality of first through grooves are formed in the first bearing plate (7), and a plurality of second through grooves are formed in the second bearing plate (8).
8. The burying construction method of the municipal road drainage pipeline according to claim 1, characterized in that: in the step S2, before the auxiliary mounting frame is installed, a mounting groove is dug at the splicing position of the pipe sections corresponding to the bottom of the pipe ditch (1), and then the auxiliary mounting frame is arranged in the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211251931.XA CN115627823B (en) | 2022-10-13 | 2022-10-13 | Municipal road drainage pipeline buried construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211251931.XA CN115627823B (en) | 2022-10-13 | 2022-10-13 | Municipal road drainage pipeline buried construction method |
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| CN115627823A true CN115627823A (en) | 2023-01-20 |
| CN115627823B CN115627823B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211251931.XA Active CN115627823B (en) | 2022-10-13 | 2022-10-13 | Municipal road drainage pipeline buried construction method |
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Cited By (1)
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|---|---|---|---|---|
| CN118327122A (en) * | 2024-04-26 | 2024-07-12 | 广东雍晟建筑工程有限公司 | Road drainage pipeline protection structure and construction device |
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| CN217030444U (en) * | 2022-04-22 | 2022-07-22 | 雷彬楠 | A damaged prosthetic devices for municipal administration sewage discharge pipeline |
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| US20170146164A1 (en) * | 2014-07-11 | 2017-05-25 | Hobas Pipes International Gmbh | Pipe coupling |
| CN212078174U (en) * | 2020-03-31 | 2020-12-04 | 聊城市科慧市政工程设计院 | Municipal drainage pipe of easily installing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118327122A (en) * | 2024-04-26 | 2024-07-12 | 广东雍晟建筑工程有限公司 | Road drainage pipeline protection structure and construction device |
| CN118327122B (en) * | 2024-04-26 | 2024-10-01 | 广东雍晟建筑工程有限公司 | Road drainage pipeline protection structure and construction device |
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| Publication number | Publication date |
|---|---|
| CN115627823B (en) | 2023-07-28 |
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